What does “Ounce-for-ounce” mean?

"Ounce-for-ounce" is termed to be a great comparison or measurement of two quantities or amounts on a one-to-one basis. Which is highly based on their weight in ounces. Whereas, it is utilized to compare two items and to calculate which one is heavier or lighter, or to compare the strength, quality, or quantity of two items using the same way.

For example: Suppose two different juice brands are kept for comparison, and one is advertised as being "ounce-for-ounce" as good as the other. In that case, it shows that the two brands are equally best in the aspects of taste, quality, or nutritional content, regardless of the size or weight of the container. The term can be used to compare items in a way that removes the impact of size or volume and emphases solely on weight or other applicable factors.